Improvement in grindstone-frames



J. E. De FREEST.

GRINDSTONE FRAME.

No. 181,919. Patented. Sep t.5,1876.

B A lll llll I WITNESSES 1.7V VEJV'TOR m am By Attorneys.

PETERS. PHOTO-UTHOGRAPHER. WASHINGTON. D C.

UNITED STA ES JEROME E. DE FREEST, OF TROY, NEW YORK, ASSIGNOR OFONE-HALF HIS PATENT OFFICE.

RIGHT TO JONES W. LAWRENCE, OF SAME PLACE. I

IMPROVEMENT lN GRlNDSTONE-FRAMES.

Specification forming part of Letters Patent No. lS1.9l 9, datedSeptember 5, 1876; application filed March 21, 1876.

To all whom it may concern:

Be it known that I, JEROME E. DE FREEs'r, of Troy, in the county ofRensselaer, and in the State of New York, have invented certain new anduseful Improvements in Tubular Folding Grindstone-Frames; and do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being bad to the accompanying drawings, and to' theletters of reference marked thereon, making a part of thisspecification.

The nature of my invention consists in the construction oi'a tubularframe for grindstones, as will be hereinafter more fully set forth.

The annexed drawing represents a perspective view of my invention.

A A representtwo parallel tubes or gaspipes, connected by ordinaryT-joints B with two shorter ends, 0 O, forming a tubular frame. In theouter ends of the T-joints B are inserted tubular legs D D, forsupporting the frame,- said legs being connected bydiagonal rods orbraces 12 b, the ends of which pass through the legs, and are held bynuts on a, as shown. In the center, where the braces b b cross eachother, they are connected by a clamp,

G, making the frame perfectly rigid. On the side tubes A A'are' securedsuitable boxes I, in which the shaft J has its bearings, said shaftbeing at one end provided with a crank, K, and having one or moregrindstones, L, secured on it. v

This frame may be folded by simply removin g the braces b b, when thelegs can be turned in under the frame. I

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is vThe combination, in agrindstone-frame, of the parallel tubes A A, provided with boxes I I,the T-joints B B, end tubes 0 O, tubular legs D D, diagonal braces b b,and central clamp G, all constructed substantially as and for thepurposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this3d day of March, 1876.

JEROME E. DE FREEST.

Witnesses:

J NO. H. OBRIEN, A. K. LAMPORT.

